Quick Start: Learning How to Make Measurements
If You Encounter a Problem
If the display lights, but the ventilation fan does not start:
❏Check that the fan is not obstructed. To check the fan, follow these steps:
1.Switch the LINE power to the off position.
2.Check that the fan blades are not jammed.
❏Contact the nearest Agilent Technologies office for service, if necessary. A list of Agilent Technologies sales and service offices is provided in Table
Data Entry Problems
If the data entry controls (keypad, knob, arrow keys) do not respond:
❏Check that the ENTRY OFF function is not enabled.
The ENTRY OFF function is enabled after you press the 
Entry Off 
key. To return to normal entry mode, press any function key that has a numeric parameter associated with it, for example, 
Start
.
❏Check that none of the keys are stuck.
❏Check that the selected function key accepts data.
For example, 
Scale Ref
accepts data, but 
System
does not.
❏Check that the analyzer's "R" GPIB STATUS light is not illuminated.
If the analyzer's "R" GPIB STATUS light is illuminated, a test sequence may be running, or a connected computer controller may be sending commands or instructions
to, or receiving data from, the analyzer. Press 
Local
if you want to return to LOCAL control.
If the parameter you are trying to enter is not accepted by the analyzer:
❏Ensure that you are not attempting to set the parameter greater than or less than its limit. Refer to the User's Guide for parameter limits.
No RF Output
If there is no RF signal at the front-panel port:
❏Check that the signal at the test port is switched on. 1. Press 
Power
and toggle SOURCE PWR to ON.
NOTE | On ES models, it is possible to set the source power to come from PORT 2 |
| instead of PORT 1, so you must check the power at the correct port. With |
| factory preset, the power comes from PORT 1. |
|
|
❏If you are applying external modulation (AM) to the analyzer, check the external modulating signal or external gate/trigger signals for problems.
Chapter 2 |